271
272
Go away Python
A blog post written by Lorentz Kinde. It's probably about something technical.
273
So you want to parse a PDF?
Suppose you have an appetite for tilting at windmills. Let's say you love pain. Well then why not write a PDF parser today?
274
Persona vectors: Monitoring and controlling character traits in language models
A paper from Anthropic describing persona vectors and their applications to monitoring and controlling model behavior.
275
How good engineers write bad code at big companies
Every couple of years somebody notices that large tech companies sometimes produce surprisingly sloppy code. If you haven’t worked at a big company, it might be…
276
I stopped everything and started writing C again
Welcome to kmx.io
277
Your data model is your destiny
Your product's core abstractions determine whether new features compound into a moat or just add to a feature list. Here's how to get it right.
278
Igalia, Servo, and the Sovereign Tech Fund
Igalia is an open source consulting firm specialised in the development of innovative projects and solutions. Our engineers have expertise in a wide range of technological areas, including browsers and client-side web technologies, graphics pipeline, compilers and virtual machines. We have the most WPE, WebKit…
279
280
Generative AI coding tools and agents do not work for me
People keep asking me If I use Generative AI tools for coding and what I think of them, so this is my effort to put my thoughts in writing, so that I can send people here instead of having to repeat…
281
Python on the Edge: Fast, sandboxed, and powered by WebAssembly
With AI workloads on the rise, the demand for Python support on WebAssembly on the Edge has grown rapidly. However, bringing Python to WebAssembly isn'...
282
GPT-5-Codex
Codex just got faster, more reliable, and better at real-time collaboration and tackling tasks independently anywhere you develop—whether via the terminal, IDE, web, or even your phone.
283
Things I would have told myself before building an autorouter
Important lessons from trying to build the world's fastest autorouter for about a year
284
A Fast 64-Bit Date Algorithm (30–40% faster by counting dates backwards)
Counting years backwards unlocks faster speed. The first date algorithm to use only 4 multiplications, instead of 7+
285
286
Pyrefly vs. Ty: Comparing Python's two new Rust-based type checkers
A deep dive into Meta's pyrefly and Astral's ty - two new Rust-based Python type checkers that both promise faster performance and better type inference.
287
Advanced Python Features
A collection of advanced Python features that I've found interesting, underrated, or unique - as someone who's seen a lot of Python code.
288
My experience with Claude Code after two weeks of adventures
Hatching... Cursor Shenanigans Cursor, my beloved, started rate limiting shenanigans a few days back. For a good 2 weeks after June 16, 2025, we had almo...
289
290
Code review can be better
Slightly unusual genre today: a negative result about our git-review tool for a different take on code review process, which we decided to shelve, at least for the time being.
291
I wasted weeks hand optimizing assembly because I benchmarked on random data
The target system was a distributed data processing platform that ran across hundreds of thousands of machines. At such scales, a 0.5% improvement would easily make up my salary going forward, and 2% was a good result for the half.
292
So you wanna build a local RAG?
How to build a RAG system that's fully self-hosted.
293
DrawAFish.com Postmortem
A blameful postmortem of how my viral HackerNews project got compromised by legacy passwords, missing auth, and the perils of vibe coding.
294
295
Simulating water over terrain
If you don't want a long an boring introduction, skip directly to the virtual pipes method description . I will get a little bit sad if you do this, though x)
296
Zig's New Async I/O
Asynchrony is not concurrency.
297
Elixir 1.19
Elixir v1.19 released: type checking of protocols and anonymous functions, broader type inference, improved compile times, and more.
298
OCaml as my primary language
A detailed explanation of why I chose OCaml as the ‘default’ programming language for every project.
299
My approach to building large technical projects (2023)
Whether it's building a new project from scratch, implementing a big feature, or beginning a large refactor, it can be difficult to stay motivated and complete large technical projects. A method that works really well for me is to continuously see real results and to order my work based on that.
300
Advent of Compiler Optimisations 2025
Announcing AoCO 2025 - daily December posts about compiler optimisations